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add bbox whereclause to make postgis 3.0 happy

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Normally ST_Covers() should include a bbox index use,
so adding a bbox where clause is not really necessary.
However, the query planner messes up and uses a parallel
index search with a second index instead of exclusively
running on the geometry index, when the bbox part is
missing.
This commit is contained in:
Sarah Hoffmann
2020-02-16 14:10:22 +01:00
parent 55c8a0ac08
commit 2a6e8ad68e
1 changed files with 3 additions and 0 deletions
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3
sql/functions/placex_triggers.sql
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@@ -579,7 +579,10 @@ BEGIN
IF NEW.osm_type = 'N' AND addr_street IS NULL AND addr_place IS NULL IF NEW.osm_type = 'N' AND addr_street IS NULL AND addr_place IS NULL
AND NEW.housenumber IS NULL THEN AND NEW.housenumber IS NULL THEN
FOR location IN FOR location IN
-- The additional && condition works around the misguided query
-- planner of postgis 3.0.
SELECT address from placex where ST_Covers(geometry, NEW.centroid) SELECT address from placex where ST_Covers(geometry, NEW.centroid)
and geometry && NEW.centroid
and (address ? 'housenumber' or address ? 'street' or address ? 'place') and (address ? 'housenumber' or address ? 'street' or address ? 'place')
and rank_search > 28 AND ST_GeometryType(geometry) in ('ST_Polygon','ST_MultiPolygon') and rank_search > 28 AND ST_GeometryType(geometry) in ('ST_Polygon','ST_MultiPolygon')
limit 1 limit 1